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Magnolia macrophylla

Magnolia macrophylla
Large-Leaved Cucumber Tree, Great-Leaved Magnolia, Umbrella Tree

4,6/5
8 reviews
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1 reviews

The young plant grows very well and relatively quickly for the past 4 years, in partial shade - shade, on the north side of the house (only a little sun from mid-May to late July?). It has very beautiful foliage that catches the eye... and the questions, but also an elegant, regular, harmonious shape. Currently, after being planted for 4 years, it has grown to a height of 4m (13ft). Given the exposure, I'm not sure if it will have flowers? But it is the foliage that is remarkable first and foremost.

Dominique, 30/10/2022

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This plant carries a 24 months recovery warranty

More information

Value-for-money
A species with lush foliage featuring large white and fragrant flowers.
Flower size
25 cm
Height at maturity
10 m
Spread at maturity
6 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time February to March, October to November
Recommended planting time March to May, September to November
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Flowering time June to July
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Description

The Magnolia macrophylla is undoubtedly the most impressive tree of its genus. It is not its flowers that catch the eye at first glance, but its lush leaves, which can exceed 60cm (24in) in length!

 

Originally from North America, the large-leaved magnolia is a large bush with a rounded habit, reaching 10 to 15 meters in height when fully grown. Its large deciduous oblong foliage, measures from 50 to 80cm (20 to 32in) in length, and is light green on the upper side and whitish gray on the underside.

In summer, beautiful and large fragrant white flowers, 20-25cm (8-10in) in diameter, bloom at the end of the branches. This summer flowering is a characteristic of American species.

 

Although exotic in appearance, the Magnolia macrophylla is hardy in many regions and can withstand temperatures as low as -15°C (5°F) without damage. It is easy to grow and prefers partial shade, but can tolerate full sun in temperate regions. Avoid windy locations. It prefers light, deep, rich, and moist soil that is neutral to slightly acidic, and does not tolerate heavy soils that retain water in winter.

Plant the Magnolia macrophylla as a standalone specimen or in the back of a border, in an exotic setting with giant Brazilian rhubarb, rodgersias, and hedychiums.

Plant habit

Height at maturity 10 m
Spread at maturity 6 m
Habit Irregular, bushy
Growth rate fast

Flowering

Flower colour white
Flowering time June to July
Flower size 25 cm

Foliage

Foliage persistence Deciduous
Foliage colour green

Botanical data

Genus

Magnolia

Species

macrophylla

Family

Magnoliaceae

Other common names

Large-Leaved Cucumber Tree, Great-Leaved Magnolia, Umbrella Tree

Origin

Cultivar or hybrid

Other Magnolia

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Planting and care

Grow the Magnolia macrophylla preferably in partial shade (in full sun in temperate regions) but not in total shade. Plant it sheltered from cold and dominant winds, in a moist, rich, deep, well-drained neutral or slightly acidic soil. In weakly alkaline soil: dig a very large planting hole of at least 50-60cm (20-24in) deep and add ericaceous compost mixed with your garden soil. Mulch the Magnolia in the first year to prevent it from freezing during heavy winter frosts. Water it in case of drought but in normal conditions watering by rain will be sufficient. From February to June, before leaves appear, remove dead or diseased wood as well as crossing branches.

Planting period

Best planting time February to March, October to November
Recommended planting time March to May, September to November

Intended location

Type of use Border, Free-standing
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, rich in humus and light

Care

Soil moisture Moist soil
Overwinter Can be left in the ground
4,6/5
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